Global Patent Index - EP 3121995 A4

EP 3121995 A4 20170419 - METHOD AND DEVICE FOR MAINTAINING MULTICAST MEMBERS

Title (en)

METHOD AND DEVICE FOR MAINTAINING MULTICAST MEMBERS

Title (de)

VERFAHREN UND VORRICHTUNG ZUM AUFRECHTERHALTEN VON MULTICAST-ELEMENTEN

Title (fr)

PROCÉDÉ ET DISPOSITIF POUR MAINTENIR DES ÉLÉMENTS DE MULTIDIFFUSION

Publication

EP 3121995 A4 20170419 (EN)

Application

EP 15785811 A 20150104

Priority

  • CN 201410175802 A 20140428
  • CN 2015070044 W 20150104

Abstract (en)

[origin: EP3121995A1] The present invention relates to the Internet field, and discloses a method and a device for maintaining a multicast group member. The method includes: sending a query message to a switch at intervals of a preset period, so that the switch sends the query message to each multicast group member included in a multicast group; acquiring a count value of current period query responses received by the switch in a current period; and maintaining, according to the count value of current period query responses and a count value of previous period query responses, the multicast group member included in the multicast group. The device includes: a first sending module, an acquiring module, and a maintenance module. In the present invention, a multicast group member is maintained by using a flow table maintained in a switch, which decreases load of a controller, and improves processing efficiency of maintaining, by the controller, the multicast group member.

IPC 8 full level

H04L 12/18 (2006.01); H04L 45/16 (2022.01); H04L 45/42 (2022.01)

CPC (source: EP KR US)

H04L 12/18 (2013.01 - KR US); H04L 12/185 (2013.01 - EP US); H04L 41/0816 (2013.01 - EP US); H04L 41/0895 (2022.05 - EP); H04L 41/122 (2022.05 - EP); H04L 47/2483 (2013.01 - US); H04L 49/201 (2013.01 - US); H04L 61/5069 (2022.05 - US); H04L 67/1044 (2013.01 - KR); H04L 41/40 (2022.05 - EP); H04L 41/5051 (2013.01 - EP US)

Citation (search report)

  • [XAY] ASAEDA NICT H: "IGMP/MLD-Based Explicit Membership Tracking Function for Multicast Routers; draft-ietf-pim-explicit-tracking-09.txt", IGMP/MLD-BASED EXPLICIT MEMBERSHIP TRACKING FUNCTION FOR MULTICAST ROUTERS; DRAFT-IETF-PIM-EXPLICIT-TRACKING-09.TXT, INTERNET ENGINEERING TASK FORCE, IETF; STANDARDWORKINGDRAFT, INTERNET SOCIETY (ISOC) 4, RUE DES FALAISES CH- 1205 GENEVA, SWITZERLAND, 3 December 2013 (2013-12-03), pages 1 - 10, XP015092722
  • [YA] GE JINGGUO ET AL: "An OpenFlow-Based Dynamic Path Adjustment Algorithm for Multicast Spanning Trees", 2013 12TH IEEE INTERNATIONAL CONFERENCE ON TRUST, SECURITY AND PRIVACY IN COMPUTING AND COMMUNICATIONS, IEEE, 16 July 2013 (2013-07-16), pages 1478 - 1483, XP032529539, DOI: 10.1109/TRUSTCOM.2013.179
  • [A] XIAOZHOU LI ET AL: "Scaling IP multicast on datacenter topologies", PROCEEDINGS OF THE NINTH ACM CONFERENCE ON EMERGING NETWORKING EXPERIMENTS AND TECHNOLOGIES, CONEXT '13, 1 January 2013 (2013-01-01), New York, New York, USA, pages 61 - 72, XP055206751, ISBN: 978-1-45-032101-3, DOI: 10.1145/2535372.2535380
  • See references of WO 2015165281A1

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 3121995 A1 20170125; EP 3121995 A4 20170419; EP 3121995 B1 20180620; CN 105099721 A 20151125; CN 105099721 B 20181207; JP 2017517182 A 20170622; JP 6241637 B2 20171206; KR 101880379 B1 20180719; KR 20160145647 A 20161220; US 2017048076 A1 20170216; US 9998293 B2 20180612; WO 2015165281 A1 20151105

DOCDB simple family (application)

EP 15785811 A 20150104; CN 201410175802 A 20140428; CN 2015070044 W 20150104; JP 2016562204 A 20150104; KR 20167031035 A 20150104; US 201615335620 A 20161027